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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of covalent linkage between hexagonal boron nitride and porphyrins on the optical nonlinearities
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Effect of covalent linkage between hexagonal boron nitride and porphyrins on the optical nonlinearities

机译：六边形氮化物与卟啉在光学非线性上的共价键合的影响

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摘要

Nonlinear optical nanostructured materials are gaining increased interest as optical limiters for various applications. In the present case, two soluble porphyrins (TPP) covalently functionalized hexagonal boron nitride (h-BN) nanohybrids (BN-TPP 1 and BN-TPP 2) as optical limiter were prepared for the first time, and characterized by various spectroscopic techniques. The covalent attachment of porphyrins onto the surfaces of h-BN improves the ease of processing of these BN-porphyrins composite materials. The results of Z-scan measurements at 532 nm in the nanosecond laser pulse regime indicated that the BN-TPP nanohybrids exhibited markedly improved nonlinear absorption and optical limiting performances compared to a control sample consisting of a covalently unattached physical blend of h-BN and porphyrins, and the porphyrin covalently functionalized graphene nanohybrids, as well as to either h-BN or TPP alone. The enhanced optical nonlinearities can be ascribed to the synergetic effects originating from charge transfer between the two counterparts. The effects of porphyrins on the structure, thermal, linear and nonlinear optical responses of the h-BN were investigated in detail. The efficient nonlinear optical performances make the as-prepared nanohybrids excellent candidates for optical limiting applications. (C) 2018 Elsevier B.V. All rights reserved.
机译：非线性光学纳米结构材料正在增加各种应用的光学器件的兴趣增加。在本情况下，首次制备两个可溶性卟啉（TPP）共价官能化六方氮化物（H-BN）纳米胺（BN-TPP 1和BN-TPP 2），并通过各种光谱技术表征。卟啉在H-BN表面上的共价附着改善了这些BN-卟啉复合材料的易于加工。在纳秒激光脉冲脉冲环境中为532nm处的Z扫描测量结果表明，与由H-BN和卟啉的共价分离的物理混合物组成的对照样品相比，BN-TPP纳米嗜含量显着提高了非线性吸收和光学限制性的性能和卟啉共价官能化的石墨烯纳米油，以及单独的H-BN或TPP。增强的光学非线性可以归因于来自两个对应物之间的充电转移的协调效果。详细研究了卟啉对H-BN的结构，热，线性和非线性光学响应的​​影响。有效的非线性光学性能使得用制备的纳米冬次进行优异的光学限制性候选物。 （c）2018年elestvier b.v.保留所有权利。

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